First mail goggles, now this. So... the developer had a fight with his girlfriend, got her email after somebody went across a few time zones, forgot the time zones, called up to apologize, she was groggy, and that made it worse. So they invented a GMail feature to combat the problem.

Welcome to another installment of "how engineers think".

Thanks, guys, for solving - or attempting to solve - a really specific problem. But: sleeping on the couch is sleeping on the couch. Ain't no GMail feature gonna fix that. :)